https://www.turbobygarrett.com/turbo...uctCd=GT2860RS
is what i have .86 back housing and we tried loosening the nut on the actuator lost about 1psi on the internal gate no ebc or mbc hooked up at the time and 18-20 psi is just where the gate opens and the drop and rate of drop is always there and always looks identical pull after pull ebc or not.